High quality: Made of high quality silicone, it is excellent Flexibility, high resilience and super durable. Non-toxic and environmental, it is great for family use. Multi-function: Stop the heat and cold from escaping during winter and summer, makes heating and cooling your home or office more efficient. It also help your house away noise, wind, dust, insect, and etc. Width selection: The total length of the sealing strip is 52 feet and can be cut to your needs. A gap of 0-15mm is recommended to select a 25mm width seal; a 0-20mm gap is recommended to select a 35mm width seal Easy to use: Clean the bottom surface of the door, wait until it is dry, then stick it. After pressing it, compact it with a hair dryer. if the temperature is low, it would be better if you use electric hair drier to heat the back adhesive Wide application: The weather stripping can be used in the bottom of sliding window/door, plastic-steel windows, security door, closet door,threshold, shower room and etc.